I had a pair of yellow tops in an altima w/orion xtr2400 and an orion 500, and a high output ohio generators alternator, one battery lasted probably 2 years and died, but the other I still have, its been 5 years, I have had it in probably 6-10 different vehicles, I actually left it in a bronco I just delivered to memphis, 240 miles away, I loved it so much I will be driving back down there to get it, I also bought a redtop from advance auto for my 92 LSL